Garmin Color GPS The 430 comes preloaded with detailed maps for U.S. inland lakes, including 5300 lakes with shoreline, depth contours, navaids and more. Over 300 of these lakes are enhanced with extra Inland Lakes Vision features (see below). For areas outside the U.S., the 430 has a worldwide basemap with satellite images in place of more traditional maps, and it's card slot makes it easy to add additional maps without connecting to a computer. With fewer keys and a simple, intuitive interface, the 430 makes navigating your way through the water easy.